Make wide character support optional

Issue #514. FindCursesw modified to make it simpler. Wide character
can be disable by passing NO_WIDECHAR=ON.
Added check and define for wide char support

Try to figure out if wide character support is available and provide
the necessary define for toxic.
Merge branch 'master' of github.com:/Tox/toxic
Update README.md
Merge pull request #2 from jin-eld/add-widechar-checks

Add widechar checks
"i wouldn't touch the toxic repo", he said.
Update README.md

Spelling
Merge pull request #4 from notadecent/patch-1

Update README.md
Merge branch 'master' of github.com:/Tox/toxic
resolve_addr() was removed from core
Use new public api
Remove duplicated function resolve_addr
Remove unused global variable
Use tox_ instead of m_ functions
Use tox.h and tox_new for toxcore discovery
Merge pull request #5 from fhahn/new-api

Use new public api
Added travis integration
Fixed travis
Hopefully fixed travis
Okay, now  If fixed travis.